NIMTE OpenIR  > 2015专题
Kinetically Stabilized Pd@Pt Core-Shell Octahedral Nanoparticles with Thin Pt Layers for Enhanced Catalytic Hydrogenation Performance
Zhang, Peipei; Hu, Yibo; Li, Baihai; Zhang, Qiuju; Zhou, Chen; Yu, Hongbo; Zhang, Xuejun; Chen, Liang; Eichhorn, Bryan; Zhou, Shenghu
2015
Source PublicationACS CATALYSIS
ISSN2155-5435
Volume5Issue:2Pages:1335-1343
AbstractThis study investigates the structural stability of small Pd@Pt core@shell octahedral nanoparticles (NPs) and their shell thickness dependent catalytic performance for p-chloronitrobenzene hydrogenation with H-2. The 6-8 nm Pd@Pt octahedral NPs are prepared by a sequential reduction method, and the characterization results confirm that Pd@Pt octahedral NPs with one to four atomic Pt layers can be controllably synthesized. The Pd@Pt octahedral NPs with one atomic Pt layer demonstrate excellent structural stability with the maintenance of core shell structures as well as high catalytic stability during cycle to cycle catalytic p-chloronitrobenzene hydrogenation reactions. The alumina-supported Pd@Pt octahedral NPs illustrate a superior catalytic performance relative to individual Pt and Pd and their physical mixtures. Theoretical calculations by density functional theory suggest that the unexpected structural stability for Pd@Pt octahedral NPs with thin Pt shells and their corresponding catalytic stability during hydrogenation reactions can be ascribed to the strong binding between Pt surfaces and reactants/products in catalytic reactions. The enhanced catalytic performance of Pd@Pt octahedral NPs possibly originates from the core-shell interaction, which adjusts the electronic state of surface Pt atoms to be suitable for selective p-chloronitrobenzene hydrogenation.
Document Type期刊论文
Identifierhttp://ir.nimte.ac.cn/handle/174433/12619
Collection2015专题
Recommended Citation
GB/T 7714
Zhang, Peipei,Hu, Yibo,Li, Baihai,et al. Kinetically Stabilized Pd@Pt Core-Shell Octahedral Nanoparticles with Thin Pt Layers for Enhanced Catalytic Hydrogenation Performance[J]. ACS CATALYSIS,2015,5(2):1335-1343.
APA Zhang, Peipei.,Hu, Yibo.,Li, Baihai.,Zhang, Qiuju.,Zhou, Chen.,...&Zhou, Shenghu.(2015).Kinetically Stabilized Pd@Pt Core-Shell Octahedral Nanoparticles with Thin Pt Layers for Enhanced Catalytic Hydrogenation Performance.ACS CATALYSIS,5(2),1335-1343.
MLA Zhang, Peipei,et al."Kinetically Stabilized Pd@Pt Core-Shell Octahedral Nanoparticles with Thin Pt Layers for Enhanced Catalytic Hydrogenation Performance".ACS CATALYSIS 5.2(2015):1335-1343.
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